docs: def page_templates_loading_check(app_configs, **kwargs):
      """ Check if any page template can't be loaded. """
      errors = []
  
      for page_template in settings.get_page_templates():
          try:
              loader.get_template(page_template[0])
          except template.TemplateDoesNotExist:
              errors.append(checks.Warning(
                      'Django cannot find template %s' % page_template[0],
                      obj=page_template, id='pages.W001'))
  
      return errors